package Thread2;

public class Demo25 {
    public static void main(String[] args) throws InterruptedException {
        Object locker1 = new Object();
        Object locker2 = new Object();
        Object locker3 = new Object();

        Thread t1 = new Thread(() -> {
            try{
                for(int i = 0; i < 10;i++){
                    synchronized (locker1){
                        locker1.wait();
                    }
                    System.out.print("A");
                    synchronized (locker2){
                        locker2.notify();
                    }
                }
            }catch (InterruptedException e){
                throw new RuntimeException();
            }
        });

        Thread t2 = new Thread(() -> {
            try{
                for(int i = 0; i < 10;i++){
                    synchronized (locker2){
                        locker2.wait();
                    }
                    System.out.print("B");
                    synchronized (locker3){
                        locker3.notify();
                    }
                }
            }catch (InterruptedException e){
                throw new RuntimeException();
            }
        });

        Thread t3 = new Thread(() -> {
            try{
                for(int i = 0; i < 10;i++){
                    synchronized (locker3){
                        locker3.wait();
                    }
                    System.out.println("C");
                    synchronized (locker1){
                        locker1.notify();
                    }
                }
            }catch (InterruptedException e){
                throw new RuntimeException();
            }
        });

        t1.start();
        t2.start();
        t3.start();

        //需要上述三个线程都执行到wait,再进行notify
        Thread.sleep(1000);
        // 主线程中,先通知一次locker1, 让上述逻辑从locker1 开始执行
        synchronized (locker1){
            locker1.notify();
        }
    }
}
